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Search for sub-TeV Neutrino Emission from Novae with IceCube-DeepCore
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0002-1668-2347
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).ORCID iD: 0000-0003-3350-390x
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
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Number of Authors: 3872023 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 953, no 2, article id 160Article in journal (Refereed) Published
Abstract [en]

The understanding of novae, the thermonuclear eruptions on the surfaces of white dwarf stars in binaries, has recently undergone a major paradigm shift. Though the bolometric luminosity of novae was long thought to arise directly from photons supplied by the thermonuclear runaway, recent gigaelectronvolt (GeV) gamma-ray observations have supported the notion that a significant portion of the luminosity could come from radiative shocks. More recently, observations of novae have lent evidence that these shocks are acceleration sites for hadrons for at least some types of novae. In this scenario, a flux of neutrinos may accompany the observed gamma rays. As the gamma rays from most novae have only been observed up to a few GeV, novae have previously not been considered as targets for neutrino telescopes, which are most sensitive at and above teraelectronvolt (TeV) energies. Here, we present the first search for neutrinos from novae with energies between a few GeV and 10 TeV using IceCube-DeepCore, a densely instrumented region of the IceCube Neutrino Observatory with a reduced energy threshold. We search both for a correlation between gamma-ray and neutrino emission as well as between optical and neutrino emission from novae. We find no evidence for neutrino emission from the novae considered in this analysis and set upper limits for all gamma-ray detected novae.

Place, publisher, year, edition, pages
2023. Vol. 953, no 2, article id 160
Keywords [en]
Novae, High energy astrophysics, Neutrino astronomy, Neutrino telescopes
National Category
Astronomy, Astrophysics and Cosmology Subatomic Physics
Identifiers
URN: urn:nbn:se:su:diva-223278DOI: 10.3847/1538-4357/acdc1bISI: 001053469100001Scopus ID: 2-s2.0-85172024545OAI: oai:DiVA.org:su-223278DiVA, id: diva2:1807142
Available from: 2023-10-25 Created: 2023-10-25 Last updated: 2023-10-25Bibliographically approved

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Deoskar, KunalFinley, ChadHidvegi, AttilaHultqvist, KlasJansson, MattiWalck, Christian

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Deoskar, KunalFinley, ChadHidvegi, AttilaHultqvist, KlasJansson, MattiWalck, Christian
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